Hellfire Gears Overview
what it doesHellfire Gears is an S-Rank Stun W-Engine in Zenless Zone Zero with 684 base ATK and 18% Impact at max level; it is the best-in-slot W-Engine for Koleda, Anby Demara.
- Rank
- S-Rank
- Specialty
- Stun
- Base ATK (max)
- 684
- Substat
- Impact 18%
- Best for
- Koleda, Anby Demara
- Refinements
- R1 – R5
Passive by Refinement
R1 → R5| Rank | Passive effect |
|---|---|
| R1 | Off-field: Energy Regen +0.6/s. EX Special Attack: Impact +10% for 10s (max 2 stacks). |
| R2 | Off-field: Energy Regen +0.75/s. EX Special Attack: Impact +12.5% for 10s (max 2 stacks). |
| R3 | Off-field: Energy Regen +0.9/s. EX Special Attack: Impact +15% for 10s (max 2 stacks). |
| R4 | Off-field: Energy Regen +1.05/s. EX Special Attack: Impact +17.5% for 10s (max 2 stacks). |
| R5 | Off-field: Energy Regen +1.2/s. EX Special Attack: Impact +20% for 10s (max 2 stacks). |
Stat Progression
Lv10 → Lv60| Stat | Lv10 | Lv20 | Lv30 | Lv40 | Lv50 | Lv60 | Max |
|---|---|---|---|---|---|---|---|
| Base ATK | 46 | 131 | 243 | 359 | 472 | 580 | 684 |
| Impact | 7.2% | 9% | 10.8% | 12.6% | 14.4% | 16.2% | 18% |
Max column is Lv60 after the final Modification.
Best Agents
recommended onKoleda
Fire · Stun
Anby Demara
Electric · Stun
Roxy
Wind · Stun
Norma
Ether · Stun
Lighter
Fire · Stun
Von Lycaon
Ice · Stun
Trigger
Electric · Stun
Dialyn
Physical · Stun
Ju Fufu
Fire · Stun
Nangong Yu
Ether · Stun
Pulchra
Physical · Stun
Passive active on Stun agents: Roxy, Norma, Lighter, Qingyi, Von Lycaon, Trigger, Dialyn, Ju Fufu, Nangong Yu, Starlight Billy, Koleda, Anby Demara, Pulchra.
Hellfire Gears FAQ
quick answersWhat does Hellfire Gears do in Zenless Zone Zero?
Hellfire Gears is an S-Rank Stun W-Engine. At max level it provides 684 base ATK and 18% Impact. Its passive at R1: Off-field: Energy Regen +0.6/s. EX Special Attack: Impact +10% for 10s (max 2 stacks).
Who is the best agent for Hellfire Gears?
Hellfire Gears is the best-in-slot W-Engine for Koleda (Fire Stun), and also BiS for Anby Demara. It is a strong alternative for Roxy.
Is Hellfire Gears worth refining to R5?
Refinement only upgrades the passive, not the base stat or substat. At R1 the passive reads: Off-field: Energy Regen +0.6/s. EX Special Attack: Impact +10% for 10s (max 2 stacks). At R5 it reads: Off-field: Energy Regen +1.2/s. EX Special Attack: Impact +20% for 10s (max 2 stacks). That is 2× the R1 values. S-Rank refinements cost duplicate limited pulls, so only refine if you already own extra copies.
What is the max base ATK of Hellfire Gears?
Hellfire Gears reaches 684 base ATK at max level (Lv60, Modification 5), starting from 46 at Lv10. Its Impact substat grows from 7.2% to 18%.
Which agents can equip Hellfire Gears?
Only Stun agents can use Hellfire Gears's passive — any agent can slot it, but the passive stays inactive on other specialties. Stun agents include Roxy, Norma, Lighter, Qingyi, Von Lycaon, Trigger, Dialyn, Ju Fufu and 5 more.

